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Add checks for unsupported glyph pixel mode

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Skip rendering glyphs which don't use the 1-byte grayscale pixel mode.
This commit is contained in:
Robert Müller 2024-10-31 23:54:12 +01:00
parent f5179df6d0
commit a7a5c0ea7a
1 changed files with 12 additions and 0 deletions
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12
src/engine/client/text.cpp
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@ -510,6 +510,11 @@ private:
} }
const FT_Bitmap *pBitmap = &Glyph.m_Face->glyph->bitmap; const FT_Bitmap *pBitmap = &Glyph.m_Face->glyph->bitmap;
if(pBitmap->pixel_mode != FT_PIXEL_MODE_GRAY)
{
log_debug("textrender", "Error loading glyph, unsupported pixel mode. Chr=%d GlyphIndex=%u PixelMode=%d", Glyph.m_Chr, Glyph.m_GlyphIndex, pBitmap->pixel_mode);
return false;
}
const unsigned RealWidth = pBitmap->width; const unsigned RealWidth = pBitmap->width;
const unsigned RealHeight = pBitmap->rows; const unsigned RealHeight = pBitmap->rows;
@ -788,6 +793,13 @@ public:
} }
const FT_Bitmap *pBitmap = &Face->glyph->bitmap; const FT_Bitmap *pBitmap = &Face->glyph->bitmap;
if(pBitmap->pixel_mode != FT_PIXEL_MODE_GRAY)
{
log_debug("textrender", "Error loading glyph, unsupported pixel mode. Chr=%d GlyphIndex=%u PixelMode=%d", NextCharacter, GlyphIndex, pBitmap->pixel_mode);
pCurrent = pTmp;
continue;
}
for(unsigned OffY = 0; OffY < pBitmap->rows; ++OffY) for(unsigned OffY = 0; OffY < pBitmap->rows; ++OffY)
{ {
for(unsigned OffX = 0; OffX < pBitmap->width; ++OffX) for(unsigned OffX = 0; OffX < pBitmap->width; ++OffX)